Sanding device for self-propelled road-vehicles.



M.. H. KORN. SANDING DEVICE POB SELF PROPELLED ROAD VBHIGLES. "APBLIUATIoNul-"ILBD maofz, 1913 j ggl. Patented Mar. 24, 1914.'r

To all whom t mty concern:

VBeit'known that I, MAX H; Koiingfa citilersey, have invented or discoveredcertain new and useful Improvements in Sanding Devices for Self-Propelled Road-Vehicles, of which the following isa full, clear, and complete disclosure.

My invention particularly relates toan arrangement for preventing the slipping and slrdding of the wheels of self Apropelled road-yehicles when Amoving over wet and slippery surfaces. lVith road vehicles this slipping and skidding may be of three kinds (l) the continued motion of the vehicle in Vthe line of its previous. motion when the brakes are applied; (2) the 'slipping of theA driving wheels on vthe road sur-face on ap-` 35. be understood by an explanation of thisein- .bodiment. Iirt-he drawing Figure aside eleva. tion of a rea'r -wheelv and? the "adjacent partsvv ofV a self A' propelled vehicle with" my. im-

plying power for the purpose of startingor accelerating the vehicle; (3) side slipping or motion in a direction at an .angle to the intended direction of motion. The third kind is peculiar to road vehicles and is the causel of many serious accidents.

`It"-i`s tlie object of my invention to overcome thse several kinds "of slipping-, and

-skidding by incorporating in the vehicle mechanism under-the control of the operator for applying sand onfritiony material to the road surface and in the drawing accofnilf pany-ing and- :forming a partiefthis specilication I have illustrated the'. preferred eines bodiinent of my invention and it willreadily proved arrangement,applied-thereto. Fi'giQ is a sectionall view of the distributing spout and the ejector for .forcing out the friction material. `Fig. 3-is. a detail View of the gate employed to normally close the discharge-- conduit when the apparatus 1s out of use,

and Fig. 4 is a detail view showing the rela-l tive size and location of the spout with rei `spect .to the tread of the wheel.

Referring in detail to the several views, the numeral l'designates thedriving wheel which is, provided with a tire 2 having ha tread of any usual shape.

The numeral 3 designates a reservoinuforsand or :friction material mounted o'i'1"^' lthe chassis-4; of thevehicle. A conduit lextends from the reservoir to the distributing vspout and agate 'if is disposed in the horizontal .portion Gof this conduit. In practice this gate Tis preferably located immediately adjacent the spout and as near the discharge orifice 8 of the spout as possible, in order that whenl the gate opens and the delivery of material starts the material will Vreach the surface in as short a time as possible. An endless screw ejector 9 is mounted in the discharge conduit immediately in the rear ofthe gate and the shaft '104 of this eJector is `connected by a flexible driving cable"11 with the spur gear 12. The latter ism'ouuted on a rocker arm 13 and is normally held away from the gear 14 en the wheel by the spring l5. In order to throw the gears 1 2 and 14 inte mesh-.arod 16` is provided and extends to a pedal or operating handle not shown, under the control of the operator. The gate 7 above referred to ispreferably of the spring pressed type and as shown consists of askeleton frame 18 and four spring pressed iaps 19 arranged to normally close the discharge conduit but to open outwardly under the pressure of the material when the ejector is brought into action.' The discharge orifice 8 is narrow and elongated and extends not only across the front of the tread but projects on each `sideso .as to distribute a broad band of material sufficient in width to overcome slipping and skidding sidewise as well as in .mother directions. In'this respect the spout differs from those-heretofore used on rail vehicles which are purposely made narrow so as to` limit the delivery of material to a .narrow` layer on the rail and under the tread. By .locating the gate at or near the spout` and by providing a power driven ejector-located immediately in the rear of u 'specfvication-of Letters Patent'.f. gj Bl.. 24 1914. Application alega iiece'niber 2, '1913.' serieu 4 'the gate I'amable to secure a much quicker action than would be possible in any arrangement where the gate is located at or 'adjacent .the reservoir and the discharge depends on gravity alone. 'y

llVhile the structuge illustrated shows the improvements applied to only one wheel, it is obvious that it may be applied to alllfour wheelsiand in such case, if desired, a single reservoir may be employed.` Where thefinvention is employed in connection with front or steering wheels arranged to turn with respect to the body, the spout should be mounted so asta-turn with the wheels and this `can beeasily vaccomplished in any desired way, as by mounting it fon the steering knuckle.

fhenthis is done the conduit 4 should be made of flexible material. l

It is believed that the operation of my improved arran ement will readily be under.- stood from t e foregoing description and While I have. only described the preferred embodiment of my invention, I am aware that modificationsl may be made therein by those skilled in the art without departing 10 from the scope of my claim.

i' y 15 conduit extending therefromand terminat- A What I claim is: ,[fhe combination in a self propelled road vehicle "of.alvifheeh areservoii" of friction material mounted on the vehicle, a discharge ingin` discharge'spon ir ose'd fin ad Vance ofis'aid Wheel, a spi'ingiprefs's'e'" .agate in said conduit at its discharge end, `anejector rdisposedimsaid conduit in tlefrearf-of said gate anddriving mechanism for said ejector `comprising av gear'onv-said wheel arranged to mesh with a ear connected to said eJector and meansf or connecting and. necting said driving mechanism, tially as described. 

